mrcurryAbsolutely, great question -- using our proprietary tool, Prime Response, we track alot of data about "reputation conversion" for us we build with clients value chains to apply to meet any number of goals - more reviews, better reviews, more friends, direct feedback, and many others. The 22.5% for the BBB is an indication that when we deploy BBB as a part of one of these value chains we have sent X many consumers to the BBB "review us" page. 22.5% of those X customers completed the act of completing a review that was posted on BBB's site.
Hope that helps.